okay a buddy of mine has 3500 to put into his truck and doesnt know where to start. its a 07 5.9 3500 6spd 4x4 with a doule disk clucth he just had put in. we have ideas in mind but just wanted some other opinions on how to spend the money. plz and thank you

 

I would do in order:

Gauges
AirDog II
5" straight pipe exhaust
Air intake
Smarty
Intake horn
Put the rest towards injectors

 

guages, Fuel, Smarty, Air in, Air out!

 

if it was my 3500 id put it towards billet'ing my tranny but if not it would be gauages definately first then a airdog lift pump and filters, a intake horn and intake filter then probably smarty then exhaust